The calculated distance (air line) between Al Qāhirah al Jadīdah and Rosetta is approximately 112 miles respectively 180 kilometers.
By car or train, the actual journey to Rosetta is certainly longer, as only the direct route (as the crow flies) between Al Qāhirah al Jadīdah and Rosetta has been calculated here.
Air line (approximately)
180 kilometers
97 nautical miles